806 with a leak at the 540 PTO shaft

I have an IT manual for it. It is not very specific (or at least doesn't seem like it to me). It appears that the entire PTO assembly comes out fairly easy and then a few keeper/clip rings and the shaft comes apart from the gears and then there are a few seals to be replaced. Is it really that simple or is this a bigger job than it looks like???
As a small time guy who uses that tractor about 100 hours a year is this something to fix myself, take to a shop, or just watch the fluid levels???

There should be available a screw in seal on the outside of the unit that can be purchased. Contact CIH. Been there, done it.

There is a LITTLE more then you expect to take that PTO apart . (1) ya need a spring compressor to compress the spring that pushes the piston back in so you can remove the snap ring and this also compresses the brake piston springs a bit . This can be home made with some pieces of 3/8th all thread and a piece of three inch pipe with a wide slot cut up to give access to the snap ring a heavy piece of plate steel with two 7/16ths holes drilled into it to go over the all thread that ya screw into the bolt holes that hold the pump cove to the unit . (20 the special hyd. fitting and a hyd pressure gauge that will go to 600 lbs so that you can reset the lock up pressure when your done . Other tools needed are a 15/16th socket . a extension 3/4 socket 3/8ths socket side cutters or a cotter pin puller the bottom third of a cut off 55 gallon drum a 1/2 in. drain plug socket and a cherry picker and a short chain and a piece of pipe to stick over the end of the PTO shaft to make it easier to tip while removing and replacing as you have to tip the ft of the PTo up so you do not bang the pick up tube when you come out and go back in . The unit is HEAVY that is why i said CHERRY PICKER so you can safely handle it Removal of the three point top link plate allows you to see what is going on while you come out and i try and leave the input shaft inside . Yes they do make a seal that you can screw in from the outside

so is the screw in seal an adequate fix???